Mercury 5MLH 5HP Outboard – 20in Shaft

Rig the eco-friendly, propane-powered Mercury 5MLH to bypass volatile gasoline storage hazards on tall sailboat transoms. The pressurized 123cc LPG induction system forces steady torque, pushing heavily loaded displacement hulls safely against coastal tidal currents. Taping your auxiliary bracket confirms this 20 inch long shaft portable outboard reaches undisturbed green water smoothly.

Eliminate frustrating carburetor gumming during seasonal storage by utilizing the carbon-free propane combustion system as a permanent mechanical fix. You simply thread a standard LPG hose to the cowl connector for instant fuel delivery. Mercury casts the 28 kg block using multi-stage marine primers. This physical barrier blocks cosmetic paint blistering when repowering small sailboats in harsh saltwater environments.

Key Features of Mercury 5MLH

- Pressurized Propane Induction: Eliminates ethanol-related carburetor gumming completely, guaranteeing reliable starting even after months of seasonal storage.
- 20-Inch Long Shaft: Reaches deep below elevated sailboat auxiliary brackets, keeping the propeller fully engaged during steep coastal swells.
- Six-Position Manual Tilt: Adjusts the running angle physically, allowing the operator to lift the gearcase over shallow coastal reefs safely.
- 360-Degree Tiller Steering: Allows the operator to spin the engine completely around, providing full reverse thrust instantly without complex gearboxes.
- Auto-Decompression System: Bleeds cylinder pressure mechanically during starting, reducing the physical pull rope effort required to ignite the block.
- Multi-Stage Marine Primer: Bonds chemically to the alloy block, reflecting harsh ultraviolet light and preventing cosmetic saltwater blistering over time.
- Through-Prop Exhaust Routing: Forces combustion gases directly underwater, significantly reducing engine noise and raw fumes at the operator seating position.
- Accessible Oil Drain: Simplifies routine crankcase lubrication changes, saving significant time during seasonal maintenance prep without specialized tools.
- Rugged Lower Unit: Transfers single-cylinder horsepower to the propeller securely, maintaining forward momentum on heavily loaded displacement hulls.
- Eco-Friendly LPG Combustion: Burns propane with zero carbon buildup, easily meeting the strictest harbor emissions regulations and global marine standards.

Why Choose Mercury 5MLH

This specific 20-inch block is built strictly to serve as auxiliary sailboat power or propel high-transom displacement hulls. Mounting it on a standard 15-inch dinghy will cause massive lower unit drag. Installing a reliable long shaft portable outboard motor ensures safe harbor returns.

- Verify your sailboat motor bracket requires exactly a 20-inch vertical shaft drop.
- Confirm operators can physically pivot the engine block 360 degrees for reverse.
- Comply with strict harbor emissions laws utilizing clean-burning propane technology.

Ideal Application and Vessel Fitment

This 20-inch long-shaft configuration is engineered specifically as a primary kicker for small sailboats, eco-sensitive high-transom displacement hulls, and heavy utility skiffs operating on restricted lakes. The extended midsection ensures the propeller remains deeply submerged when the vessel pitches in steep ocean swells. By utilizing standard propane tanks, captains eliminate the risk of spilled gasoline on deck, making this long shaft portable outboard motor an essential, environmentally responsible tool for maneuvering heavy sailboats safely through crowded coastal marinas.

Warranty, Support and Maintenance

Authorized recreational operation receives a 3-Year Limited Warranty alongside a 3-Year Corrosion Warranty. Registered commercial applications fall under a strict 1-Year Limited Warranty with zero corrosion coverage applied to the block. Scheduled maintenance requires replacing gearcase lubricants and checking spark plugs at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. Mulmotor provides pre-purchase product guidance and order-related customer support.